හවුල් ශ්‍රව්‍ය

What if an asteroid hits Earth… tomorrow? It sounds like a movie, but near-Earth asteroids are real—and scientists track them every day. If a massive asteroid, about 1 kilometer wide, slammed into our planet, the impact would release energy equal to millions of nuclear bombs. First, a powerful shockwave would destroy everything for hundreds of kilometers. Then, intense heat would ignite global wildfires. Dust and debris would rise into the atmosphere, blocking sunlight and triggering a devasta